On Thu, Mar 21, 2024 at 11:27:38AM +0800, Kefeng Wang wrote:
>
> if (!newpage) {
> @@ -728,14 +729,13 @@ static void __migrate_device_pages(unsigned long *src_pfns,
> continue;
> }
>
> - mapping = page_mapping(page);
> + newfolio = page_folio(newpage);
You could save another compound_head() call by passing the folio through
to migrate_vma_insert_page() and make it migrate_vma_insert_folio(),
since its already converted to use folios.
> + folio = page_folio(page);
> + mapping = folio_mapping(folio);
>
